Issue #2784 has been updated by Yui NARUSE.
Is this really a bug?
There is no documentation and doesn't work;
it is considered that there was no such function.
So my understanding is, this should be feature request.
Yeah, such function seems useful, but I don't have how it should works.
----------------------------------------
http://redmine.ruby-lang.org/issues/show/2784
----------------------------------------
http://redmine.ruby-lang.org